title: Examples abound of gaps in medical knowledge because of groups excluded from scientific study.
authors.forename: P
authors.initials: P
authors.lastname: Cotton
mesh_terms: D004358:Drug Therapy; D005260:Female; D006331:Heart Diseases; D006801:Humans; D008297:Male; D008598:Menstruation / Q000502:physiology; D008657:Metabolic Clearance Rate; D044469:Racial Groups; D012107:Research Design; D012737:Sex Factors